Use high resolution icons where possible for streamlined hosted app icons.

chrome/chrome_browser.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 584 matching lines @@
         'browser/extensions/token_cache/token_cache_service.h',
         'browser/extensions/token_cache/token_cache_service_factory.cc',
         'browser/extensions/token_cache/token_cache_service_factory.h',
         'browser/external_protocol/external_protocol_handler.cc',
         'browser/external_protocol/external_protocol_handler.h',
         'browser/external_protocol/external_protocol_observer.cc',
         'browser/external_protocol/external_protocol_observer.h',
         'browser/external_tab/external_tab_container.h',
         'browser/favicon/favicon_changed_details.cc',
         'browser/favicon/favicon_changed_details.h',
+        'browser/favicon/favicon_downloader.cc',
+        'browser/favicon/favicon_downloader.h',
         'browser/favicon/favicon_handler.cc',
         'browser/favicon/favicon_handler.h',
         'browser/favicon/favicon_handler_delegate.h',
         'browser/favicon/favicon_service.cc',
         'browser/favicon/favicon_service.h',
         'browser/favicon/favicon_service_factory.cc',
         'browser/favicon/favicon_service_factory.h',
         'browser/favicon/favicon_tab_helper.cc',
         'browser/favicon/favicon_tab_helper.h',
         'browser/favicon/favicon_util.cc',
@@ skipping 3158 matching lines @@
             'package_name': 'org/chromium/chrome/browser/ui/toolbar',
             'template_deps': ['browser/ui/toolbar/toolbar_model_security_level_list.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }